Enhances Signals table

src/dispatch/database/revisions/tenant/versions/2023-10-23_f2605bfc1f59.py

@@ -0,0 +1,41 @@
+"""Adds search vector column to the signal instance model
+
+Revision ID: f2605bfc1f59
+Revises: 064c71206256
+Create Date: 2023-10-23 11:15:53.297563
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlalchemy_utils
+
+# revision identifiers, used by Alembic.
+revision = "f2605bfc1f59"
+down_revision = "064c71206256"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column(
+        "signal_instance",
+        sa.Column("search_vector", sqlalchemy_utils.types.ts_vector.TSVectorType(), nullable=True),
+    )
+    op.create_index(
+        "signal_instance_search_vector_idx",
+        "signal_instance",
+        ["search_vector"],
+        unique=False,
+        postgresql_using="gin",
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(
+        "signal_instance_search_vector_idx", table_name="signal_instance", postgresql_using="gin"
+    )
+    op.drop_column("signal_instance", "search_vector")
+    # ### end Alembic commands ###

src/dispatch/database/service.py

@@ -390,7 +390,7 @@ def composite_search(*, db_session, query_str: str, models: List[Base], current_
 
     # TODO can we do this with composite filtering?
     # for model in models:
-    # 	 query = apply_model_specific_filters(model, query, current_user)
+    #    query = apply_model_specific_filters(model, query, current_user)
 
     return s.search(query=query)
 
@@ -497,6 +497,7 @@ def search_filter_sort_paginate(
 ):
     """Common functionality for searching, filtering, sorting, and pagination."""
     model_cls = get_class_by_tablename(model)
+
     try:
         query = db_session.query(model_cls)
 

src/dispatch/signal/models.py

@@ -4,19 +4,20 @@
 
 from pydantic import Field
 from sqlalchemy import (
-    JSON,
+    select,
     Boolean,
     Column,
     DateTime,
     ForeignKey,
     Integer,
+    JSON,
     PrimaryKeyConstraint,
     String,
     Table,
     UniqueConstraint,
 )
 from sqlalchemy.dialects.postgresql import JSONB, UUID
-from sqlalchemy.orm import relationship
+from sqlalchemy.orm import relationship, column_property
 from sqlalchemy_utils import TSVectorType
 
 from dispatch.auth.models import DispatchUser
@@ -236,8 +237,19 @@ class SignalInstance(Base, TimeStampMixin, ProjectMixin):
     signal = relationship("Signal", backref="instances")
     signal_id = Column(Integer, ForeignKey("signal.id"))
 
+    signal_name = column_property(select([Signal.name]).where(Signal.id == signal_id))
+    signal_description = column_property(select([Signal.description]).where(Signal.id == signal_id))
+
+    search_vector = Column(
+        TSVectorType(
+            "signal_name",
+            "signal_description",
+            weights={"signal_name": "A", "signal_description": "B"},
+        )
+    )
+
 
-# Pydantic models...
+# Pydantic models
 class Service(DispatchBase):
     id: PrimaryKey
     description: Optional[str] = Field(None, nullable=True)